# ================================
# 集中化存储配置管理系统演示
# ================================
# 
# 这个脚本演示了如何从分散的Upload和CloudStorage配置
# 迁移到统一的集中化Storage配置管理系统
#

Write-Host "======================================" -ForegroundColor Green
Write-Host "集中化存储配置管理系统演示" -ForegroundColor Green
Write-Host "======================================" -ForegroundColor Green

# 1. 展示问题现状
Write-Host "`n📋 当前配置分散问题:" -ForegroundColor Yellow
Write-Host "  ❌ Upload配置 + CloudStorage配置 = 重复和不一致"
Write-Host "  ❌ 多处配置文件需要单独维护"
Write-Host "  ❌ 配置验证逻辑分散"
Write-Host "  ❌ 难以统一管理和监控"

# 2. 演示集中化配置的优势
Write-Host "`n✨ 集中化Storage配置优势:" -ForegroundColor Cyan
Write-Host "  ✅ 单一配置入口 - Storage节点统一管理"
Write-Host "  ✅ 自动迁移工具 - 无缝从旧配置升级"
Write-Host "  ✅ 统一验证逻辑 - 配置一致性保证"
Write-Host "  ✅ 智能缓存机制 - 性能优化"
Write-Host "  ✅ 完整的备份和回滚支持"

# 3. 配置结构对比
Write-Host "`n📊 配置结构对比:" -ForegroundColor Magenta

Write-Host "`n🔴 传统分散配置:" -ForegroundColor Red
@"
{
  "Upload": {
    "MaxFileSize": 52428800,
    "AllowedExtensions": [".jpg", ".png"],
    "UploadPath": "wwwroot/uploads"
  },
  "CloudStorage": {
    "DefaultProvider": "AliyunOSS",
    "AliyunOss": {
      "Endpoint": "...",
      "AccessKeyId": "..."
    }
  }
}
"@ | Write-Host -ForegroundColor Gray

Write-Host "`n🟢 新集中化配置:" -ForegroundColor Green
@"
{
  "Storage": {
    "CloudProvider": "AliyunOSS",
    "Local": {
      "MaxFileSize": 52428800,
      "AllowedExtensions": [".jpg", ".png"],
      "UploadPath": "wwwroot/uploads"
    },
    "AliyunOSS": {
      "Enabled": true,
      "Endpoint": "...",
      "AccessKeyId": "..."
    },
    "Cache": {
      "EnableMetadataCache": true
    },
    "Security": {
      "EnableVirusScan": false
    }
  }
}
"@ | Write-Host -ForegroundColor Gray

# 4. API 端点演示
Write-Host "`n🌐 提供的API端点:" -ForegroundColor Blue
Write-Host "  📍 GET  /api/ConfigurationMigration/status - 获取迁移状态"
Write-Host "  📍 POST /api/ConfigurationMigration/migrate - 执行配置迁移"
Write-Host "  📍 GET  /api/ConfigurationMigration/validate - 验证配置有效性"

# 5. 核心功能特性
Write-Host "`n⚙️  核心功能特性:" -ForegroundColor DarkCyan
Write-Host "  🔧 CentralizedStorageConfigurationManager - 统一配置管理"
Write-Host "  🔄 ConfigurationMigrationService - 自动迁移服务"
Write-Host "  ✅ CentralizedConfigurationValidationResult - 配置验证"
Write-Host "  💾 自动备份机制 - 安全的配置更新"
Write-Host "  🎯 智能缓存 - 配置读取性能优化"

# 6. 实际使用示例
Write-Host "`n💡 使用示例 - 在代码中注入和使用:" -ForegroundColor DarkGreen
@"
// 依赖注入注册
services.AddSingleton<CentralizedStorageConfigurationManager>();
services.AddScoped<ConfigurationMigrationService>();

// 在服务中使用
public class FileService
{
    private readonly CentralizedStorageConfigurationManager _configManager;
    
    public FileService(CentralizedStorageConfigurationManager configManager)
    {
        _configManager = configManager;
    }
    
    public async Task<bool> UploadFile()
    {
        var config = _configManager.GetStorageConfiguration();
        var provider = config.CloudProvider; // 统一获取配置
        var maxSize = config.Local.MaxFileSize; // 统一的属性访问
        
        // 根据配置选择存储提供商...
        return true;
    }
}
"@ | Write-Host -ForegroundColor Gray

# 7. 迁移安全性保证
Write-Host "`n🛡️  迁移安全保证:" -ForegroundColor Magenta
Write-Host "  📂 自动备份原配置文件 (带时间戳)"
Write-Host "  🔍 迁移前配置分析和建议"
Write-Host "  ✅ 配置验证确保完整性"
Write-Host "  📝 详细的迁移日志记录"
Write-Host "  🔄 支持批量环境迁移"

# 8. 最终总结
Write-Host "`n🎯 总结 - 为什么需要集中化配置?" -ForegroundColor Green
Write-Host "  💎 解决配置重复和不一致问题"
Write-Host "  🚀 提升配置管理效率"
Write-Host "  🔒 增强配置安全性和可靠性" 
Write-Host "  📈 支持配置的版本管理和监控"
Write-Host "  🛠️  简化开发和运维工作"

Write-Host "`n✅ 集中化存储配置管理系统已成功构建!" -ForegroundColor Green
Write-Host "   现在您可以享受统一、高效、安全的配置管理体验了！" -ForegroundColor White

Write-Host "`n🚀 下一步建议:" -ForegroundColor Yellow
Write-Host "  1. 运行 dotnet run 启动应用"
Write-Host "  2. 访问 /api/ConfigurationMigration/status 检查当前状态"
Write-Host "  3. 如需迁移，调用 /api/ConfigurationMigration/migrate"
Write-Host "  4. 使用 /api/ConfigurationMigration/validate 验证配置"

Write-Host "`n======================================" -ForegroundColor Green
